When Counseling a Male Patient with Suspected HIV, the Nurse

When counseling a male patient with suspected HIV, the nurse informs him that if the enzyme-linked immunosorbent assay (ELISA) comes back positive, then

A) no further testing is required since this confirms HIV infection.
B) a second test known as the Western blot assay will be ordered to confirm positive HIV status.
C) he will be sent to an infectious disease physician for a tissue biopsy to confirm infection.
D) if the second test, the Western blot, returns negative, he has not developed a case of full-blown AIDS.